Historical clue formulations

• Like the stereotypical gym membership purchased on New Year's Day — 2025-03-18
• In mint condition — 2020-03-22
• Mint — 2017-09-10
• Left over — 2013-07-12
• Still on the shelf — 2010-11-24
• Like some phone minutes — 2010-11-17
• Available — 2004-01-31
• Still in the original package — 2003-11-08
• Brand-new — 1999-12-20
• Fresh — 1998-08-01
• Mint — 1998-02-14
• Brand-new — 1995-03-19